Reed-relief motion for looms for weaving.



T. SHAW.

REED RELIEF MOTION FOR LOOMS FOR WEAVING.

APPLICATION FILED NOV.15,1913.

Patented June 2, 1914.

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T. SHAW.

Patented June 2, 1914.

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APPLICATION FILED N0V.15,1913.

COLUMBIA PLANOGHAPM CO. \vAsulNnroN. n.

UNITED STATES PATENT OFFICE.

THOMAS SHAW, OF- PADII-IAM, ENGLAND.

REED-RELIEF MOTION FOR LOOMS FOR WEAVING.

To all whom it may concern:

Be it known that I, THOMAS SHAW, a subject of King George V of Great Britain, residing at Padiham, in the county of Lancaster, England, have invented certain new and useful Improvements in Reed-Relief Motions for Looms for Weaving, of which the following is a specification.

My invention relates to looms for weaving and particularly to looms provided with what is known as a loose reed. As is well known to those skilled in the art, looms of this type include means whereby the reed is kept firmly fixed or is held in its proper position during the beat of the lay so long as the shuttle'properly enters the shuttle box. l/Vhen, however, the shuttle fails to properly enter the box the reed is released and is permitted to pivot or move rearwardly at its lower end in order to relieve the pressure of the shuttle 011 the warp threads, and thus avoid breakage of the latter.

The object of this invention is to improve upon the known constructions of reed-relief motions, and to provide more simple and efficient means for normally holding the reed in its normal or fixed position and for releasing it in the event of the shuttle failing to box properly and consequently obstructing the shed.

In the particular form of reed-relief motion to which my improvements are applicable, the reed is carried by a framework, and the usual stop rod moving therewith has fast thereon a lever which normally presses against the lower part of the reed and holds the latter rigid. When the shuttle fails to enter the box, the non-operation of the usual shuttle swell causes the stop rod, through. intermediate mechanism, to be rocked to carry the lever thereon away from the reed which is thereupon free to pivot or move rearwardly at its lower end.

This invention consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification:--Figure 1 is an end view of the preferred embodiment of my improvements, the reed being shown in its normal or fixed position; Fig. 2 is a similar view to Fig. 1 showing the positions of the parts after the reed has been released on the shuttle failing to box properly; Fig. 3 is an elevation of some of the parts shown in Fig.

Specification of Letters Patent.

Application filed November 15, 1913.

Patented J nine 2, 1914.

Serial No. 801,158.

1 looking in the direction of the arrow A. said figure.

Referring to the drawings 1 represents the reed, supported at its upper end as usual in a suitable form of cap 2 in which it is free to pivot.

3 is the slay and 4 the usual stop rod mow ing pivotally therewith.

5, 5 are the usual arms or levers fast on the stop rod and carrying a bar or reed frame 6 adapted to bear against the lower part of the reed to hold the reed firmly in position against the slay.

I employ two rods 7 and 8 in addition to the stop rod 4, the rod 7 being revolnbly sup ported in brackets attached to the slay while the rod 8 is revolubly supported in bosses 9, 9, on the outer ends of the auxiliary arms 9, 9, which in this instance are integral with the bosses 5, 5, of the arms or levers 5, 5. Fast on the rod or shaft 7 is secured the boss 10' of an angular lever 10 to the upper or free end of which is pivotally attached the free end of the usual swell lever 11 which extends through an opening in the back of the shuttle box and engages with the shuttle swell in the ordinary manner. On the rod 7 is also secured the boss 12 of an arm 12 extending toward the front of the loom and terminating in an inclined plane 12 which is slotted or shaped to accommodate a sliding piece 18. A stop or projection 12 on the part 12 cooperates with a pin or stud 14 carried by the sliding piece 13 to limit the downward movement of the said sliding piece.

On the rod or shaft 8, which is capable of revolving in the bosses 9, 9, I fix the boss 15 on a releasing finger or arm 15 which is adapted to'be engaged by the sliding piece 13 when the latter is moved up along the inclined plane 12 by reason of the engagement of the said sliding piece with a fixed abutment 16 on the loom frame. Also secured on the rod or shaft 8 is the boss 17 of a locking arm or lever 17 which is adapt ed to engage or bear against a projection 18 secured underneath the slay. If desired, two or more locking arms or levers such as 17 disposed at intervals across the loom may be employed.

An arm 19 fast on the stop rod 4 has secured to it one end of a coiled spring 20 whose other end is attached to a suitable fixed part, the action of the spring tending to rotate the stop rod in the direction of the arrow 5, Fig. 1. Also fast on the stop rod 1 is a vertically extending arm or lever 21 provided at its upper or free end with an adjustable screw 2 normally pressing against a pivotally mounted flap 23 in the back of the shuttle box. The function of this flap as will be described later, is to prevent a shuttle which has partially entered the box and has brought about the release of the reed, from being dragged forward as the lay completes its forward movement and also to prevent a shuttle which is short of pick from being driven behind the box. An arm such as 21 and a pivoted flap such as 23 and an angular lever 10 and a swell lever such as 11 would be provided at such end of the loom.

The rod or shaft 8 has fast thereon a suitable handle 8 Fig. 3, to enable the said rod or shaft to be rotated to replace the reed locking mechanism into normal position after the reed has been released.

So long as the loom is working normally that is to say so long as the shuttle enters the box properly, the parts occupy the positions shown at Fig. 1, that is to say the locking lever or levers 17 is or are jammed against the projection or projections 18 on the underside of the lay, being held there by the action of the spring 20 as will be understood. The proper entry of the shuttle into the box causes the rod 7, through the lever 10 to be rocked on its pivot so that the outer end of the lever 12 is raised to carry the sliding piece 13 up out of the path of the abutment 16. Should the shuttle fail to enter the box properly at the appointed time, the shuttle swell is not moved outwardly and the sliding piece consequently remains in the path of the abutment 16. As the lay beats up the piece 13 engages the abutment and is moved up the inclined plane 12 In so doing it presses against the releasing arm 15 and rocks the rod 8 on which said arm is fast. This causes the locking arm or arms 17 also fast on the rod 8 to move clear of the projection or projections 18 on the underside of the lay. Since the spring 20 is constantly tending to rotate the stop rod 4: in the direction of the arrow Z) Fig. 1, it follows that on release of the locking arm or arms the rod 4 is rocked and the arms 5 thus carry the bar or plate 6 away from the reed which is free to fly or move outwardly at its lower end to obviate breakage of the warp threads such as would occur if the shuttle remained in the shed at the beat up and the reed were held rigid.

The rocking of the stop rod 4 as above set forth causes the pressure of the set screw 22 against the flap 23 to be removed, so that a spring 2 1, Fig. 3 pressing with its free end against a pin 23 on the flap and secured at its other end to a fixed part, acts to move said flap and cause its free end to move rearwardly, so that as the lay completes its forward movement, the shuttle, if it has partly entered the box, is not dragged forwardly. Further, if the shuttle is short of pick or has notsufiicient force behind it, it may arrive in the box too late, 2 e. the sliding piece 13 may have been left in the path of the abutment 16, and so the reed will have been released. Should, however, a further pick take place before the loom is stopped, the shuttle is prevented from going behind the box by reason of the pivoting flap 23 being in its path and thus directing it into the box.

After the sliding piece 13 has been pushed up the inclined plane 12 by the abutment l6 and has released the reed, the forward movement of the mechanism, as the lay completes its heat up movement, causes the said sliding piece to continue to move up the inclined plane until it reaches such an altitude that it can pass over the abutment, when it falls again to its lowest position with the pin 14 abutting against the stop 12 The parts can be replaced in their original positions by pressing down the handle 8 and at the same time causing it to partly rotate the rod 8 to engage the locking member or members 17 underneath the lay.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a loom, the combination with a slay, a reed supported thereon so that its lower end is capable of swinging rearwardly, a stop rod movable with the lay, arms fast on said stop rod and a bar or plate carried by said arms and adapted to bear against the lower end of the reed to hold it firmly against the lay, of auxiliary arms carried by the said arms, a rod revolubly supported by the auxiliary arms, and a locking device carried by said revolubly supported rod and engaging beneath the lay to cause the bar or plate carried by the arms on the stop rod to hold the lower end of the reed against the lay.

2. In a loom, the combination with a lay, a reed supported thereon so that its lower end is capable of swinging rearwardly, a stop rod movable with the lay, arms fast on said stop rod and a bar or plate carried by said arms and adapted to bear against the lower end of the reed to hold it firmly against the lay, of auxiliary arms carried by the said arms, a rod revolubly supported by the auxiliary arms, and a locking device carried by said revolubly supported rod engag ing beneath the lay to cause the bar or plate carried by the arms on the stop rod to hold the lower end of the reed against the lay, means to release the locking device on failure of a shuttle to box properly, and a spring acting on the stop rod to cause the said rod,

on release of the locking device, to be rocked to efi'ect release of the reed.

3. In a loom, the combination with a lay, a reed supported thereon so that its lower end is capable of swinging rearwardly, a stop rod movable with the lay, arms fast on said stop rod and a bar or plate carried by said arms and adapted to bear against the lower end of the reed, of a pivotally movable rod carrying levers acted upon by the shuttle box swells, a lever fast on said rod having an inclined plane carrying a sliding piece, auxiliary arms carried by the said arms, a rod revolubly supported by the auxiliary arms, a locking device carried by the said revolubly supported rod and engaging with the lay, and a releasing member adapted to be engaged by the sliding piece to effect release of the locking member or members and a fixed abutment adapted to engage the sliding piece when a shuttle fails to box properly and through intermediate congrections to bring about release of the ree In testimony whereof I affix my signature in the presence of two witnesses.

THOMAS SHAW. Witnesses:

WILLIE ARMITAGE HEYWOOD, DENIS SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

